Parle\Lexer::push

(PECL parle >= 0.5.1)

Parle\Lexer::push — Add a lexer rule

说明

public Parle\Lexer::push ( string $regex , int $id ) : void

Push a pattern for lexeme recognition.

参数

regex

Regular expression used for token matching.

id

Token id. If the lexer instance is meant to be used standalone, this can be an arbitrary number. If the lexer instance is going to be passed to the parser, it has to be an id returned by Parle\Parser::tokenid().

返回值

没有返回值。